Since PhotoWatermark Professional integrates your watermark into your photos, no one can remove your watermark from your images without damaging the integrity of them. Only the author has full control over his/her watermark since the author works with the original images. This idea is very similar to the Adobe PDF document except that PDF allows the user to make minor changes if allowed by the author. Please ALWAYS keep a copy of your original files since NO software program INCLUDING PhotoWatermark Professional will be able to remove the watermark from your pictures. If you have deleted your original files, please do not hold us responsible, because we cannot recover your pictures.